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Vintage TXV

I pulled this old timer from an under-counter line cooler at a local primary school. The building was put up in the 1950's and most of this cafeteria is original, and this coil and TXV look like they have never been changed.

When I pulled the inlet to check the screen, I found this interesting feature. There was an adjustable orifice with a dial like setting so you could lower the capacity down from the 1/2 ton rating.

I saw one like that on a vintage glass bottle coke cooler which I came to find out they used some pretty toxic foul smelling substance in the power head. It was quite a few years ago so I'm not sure what it was? Nice back in the day pictures, Baub.